private void buttonChange_Click(object sender, EventArgs e)
{
try
{
FormChangeBook newForm =
new FormChangeBook(Int32.Parse(dataGridViewB.CurrentRow.Cells[0].Value.ToString()));
newForm.ParentAdminMainMenu = this;
newForm.Show();
Hide();
}
catch (NullReferenceException)
{
MessageBox.Show("Строка не выбрана");
}
}